A retro game engine for Python
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A .NET ascii/ansi console engine written in C# for MonoGame and XNA
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Haskell game engine library for roguelike dungeon crawlers
Rust library to create a Good Game Easily
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A fork of dhewm3 with an emphasis on modernisation and vanilla Doom 3
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TurboSphere is an easy to learn and powerful JS based game engine.
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A 2D Java game engine